Oil-in-water emulsion and process for producing the same
a technology of oil-in-water emulsion and process, which is applied in the direction of chemical/physical processes, non-ionic surface active compounds, medical preparations, etc., can solve the problems of detergent foaming, loss of stability, and emulsification
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example 1
Preparation of Polysaccharide Derivative 1
[0052]80 g of hydroxyethyl cellulose having a weight-average molecular weight of about 800,000 and a hydroxyethyl substitution degree of 1.8 (HEC-QP15000H manufactured by Union Carbide Corporation), 640 g isopropyl alcohol and 2.0 g p-toluenesulfonic acid were mixed to prepare slurry and stirred at room temperature for 30 minutes in a nitrogen atmosphere. 15 g of a compound represented by the following formula (11):
[0053]
was added thereto, and the mixture was polyoxyalkylenated by reaction at 80° C. for 8 hours. After the reaction was finished, the reaction solution was neutralized with 48% aqueous sodium hydroxide, and the reaction product was separated by filtration. The reaction product was washed twice with 500 g of 80% isopropyl alcohol, then twice with 500 g isopropyl alcohol, and dried at 70° C. for one day under reduced pressure, to give 73.4 g polyoxyalkylenated hydroxyethyl cellulose (referred to as polysaccharide derivative 1). Th...
preparation example 2
Preparation of Polysaccharide Derivative 2
[0054]80 g potato starch (manufactured by Katayama Chemical, Inc.), 640 g of 50% isopropyl alcohol and 5.5 g of 48% aqueous sodium hydroxide were mixed to prepare slurry and stirred at room temperature for 30 minutes in a nitrogen atmosphere. 19.0 g of a compound represented by the following formula (12):
[0055]
was added thereto, and the mixture was polyoxyalkylenated by reaction at 80° C. for 8 hours. After the reaction was finished, the reaction solution was neutralized with acetic acid, and the reaction product was separated by filtration. The reaction product was washed twice with 500 g of 50% isopropyl alcohol, then twice with 500 g acetone, and dried at 70° C. for one day under reduced pressure, to give 69.4 g polyoxyalkylenated starch (referred to as polysaccharide derivative 2). The degree of substitution with the group (A) in the polysaccharide derivative 2 was 0.005.
preparation example 3
Preparation of Polysaccharide Derivative 3
[0056]20.0 g of the polysaccharide derivative 2 prepared in Preparation Example 2, 200 g of 70% isopropyl alcohol, 42.6 g of sodium 3-chloro-2-hydroxypropanesulfonate and 18.0 g of 48% aqueous sodium hydroxide were mixed and sulfonated at 50° C. for 5 hours. After the reaction was finished, the reaction solution was neutralized with acetic acid, and the reaction product was separated by filtration. The reaction product was washed 3 times with 400 g of 70% isopropyl alcohol and twice with 300 g isopropyl alcohol and then dried at 70° C. for one day under reduced pressure, to give 38.3 g polyoxyalkylenated and sulfonated starch (referred to as polysaccharide derivative 3). The degree of substitution with 3-sulfo-2-hydroxypropyl group (group (B)) in the polysaccharide derivative 3 was 0.301.
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More